Okay, wrestling with jq and I don't know enough about programming to google this effectively.
I have a bunch of different thingies, and some of them have the key 'heldBy: "Person"'. If I ask it to print "Held by (.heldBy)", the thingies that don't have the key just say "Held by null", and that looks gross. How do I tell jq to only print "Held by (.heldBy)" for each thingy if the key exists, and not print anything if it doesn't?
